Brick texture to a part of a mesh
Select all the faces you want to assign the texture. Press 'U' and click in 'Unwrap'. If the texture is already assigned to those faces it will automatically distribute the texture. If not you can go in 'Material Properties' in the right side of the screen and click 'assign' with the texture you want selected.

If you want your bricks to be smaller you can create a texture map in your node ang set the scale of the texture higher. This will make the material look smaller in the mesh but will also show its rectangular pattern if it gets too small.

Best regards.